                UMContextCollection<UMJSONContext> @{mbe_fieldset_low}Contexts = new UMContextCollection<UMJSONContext>();
                JSONArray @{mbe_fieldset_low}Array = (JSONArray) context.getValue("@{mbe_fieldset_id}");
                if(@{mbe_fieldset_low}Array == null){
                    @{mbe_fieldset_low}Array = new JSONArray();
                }
                int @{mbe_fieldset_low}Length = @{mbe_fieldset_low}Array.length(); 
                       